No Feedback and Bad Service overall

Bought the Vehicle 2 Weeks ago. (Sales Person : Raymond) 1st Issue was the Alignment was out, informed contact person about it and if it wasnt for me following up it would have never happened. New Issue : Water leaks into the inside of rear brake light fitting, ive been emailing, smsing, whatsapping and calling the salesman to no avail, again no feedback. Whats my rights in terms of returning the vehicle, because im at wits end. I know its a used vehicle, but alarm bells are starting to go off at level of service and these issues.

Please advise.

Adolf Meyer ********** 935